What method of treatment did doctors use to remove the humors they believed caused the plague in their patients?

While it could easily result in accidental death from blood loss, phlebotomy endured as a common medical practice well into the 19th century. Medieval doctors prescribed blood draining as a treatment for everything from a sore throat to the plague, and some barbers listed it as a service along with haircuts and shaves.

Explanation:

opinion because one person might not like silk